The design of the wallet is inspired by the anime mechanical design of ships and robots. It is composed of 3 main parts the outer shell and the middle part that holds the cards in place. To have mechanical strength i joined the shell with a 5 pairs of M3x10 flat screw with a nut and 2 M3x3 in the middle to hold the shell to the middle part in place.

I am thinking of incorporating magnets and a lamyard in the next model so please be in the look out for that thanks. Open for suggestions:)